This standard is used to determine the resistance of the color of various types of textiles to chlorination during processing operations using acid hypochlorite solutions to prevent shrinkage of wool textiles. GB/T 8441-1998 Textiles Tests for color fastness Color fastness to chlorination GB/T8441-1998 Standard download decompression password: www.bzxz.net

ICS59.080.30
National Standard of the People's Republic of China
GB/T8426～8427-1998
GB/T8429～8431—1998
GB/T8433~8441-1998
Textiles
Tests for colour fastness
Textiles Tests for colour fastness Issued on 1998-11-26
Implemented on 1999-05-01
GB/T8441—1998
This standard is based on ISO105-X03:1987 Textiles - Tests for colour fastness - Part X03: Colour fastness to chlorination, which amends GB/T8441-1987. The revised text is equivalent to ISO105-X03:1987(E). This standard modifies the following contents of GB/T8441--1987: 1. According to the modification notice of GB/T1.1-1993 and 1995.1.12, the cover, title and writing format are modified, and the foreword and ISO foreword are added.
2. The procedures are written according to ISO105, and Chapter 2 and Chapter 3 are swapped. An introduction is added to Chapter 2. 3. The unit of length is changed to mm.
4.5.1 The combination method of fabric test specimens is specifically stated. 5. Appendix A "Preparation method of control standard sample" is changed to the main text, and the content is inserted into 4.5. 6. The content of test report is added.
Compared with ISO105-X03:1987, the following modifications are made: 1. Because there is no supply of lithium hypochlorite in China, the content related to lithium hypochlorite in 4.3 of the international standard is cancelled and changed to the same as GB/T8441-1987.
2. Cancel note 8 and insert its content into 4.5. This standard replaces GB/T8441-1987 from the date of implementation. This standard is proposed by the China National Textile and Apparel Council.
This standard is under the jurisdiction of the Basic Branch of the National Technical Committee for Textile Standardization. This standard was jointly drafted by the Standardization Research Institute of the China National Textile and Apparel Council, Shanghai Wool and Linen Textile Science and Technology Research Institute, Beijing Wool Textile Science Research Institute and Shanghai Textile Industry Technical Supervision Institute. The drafters of this standard are Tong Jinzhu, Wang Xiaoyan, Hu Fang, Lu Wenbao and Qi Yamin. This standard was first issued in 1987 and revised for the first time in 1998. 76
GB/T84411998
ISO Foreword
ISO (International Organization for Standardization) is an international alliance of national standards organizations (ISO members). The preparation of international standards is usually launched by ISO technical committees. Members have the right to participate in the committee if they are interested in the project established by the technical committee. Official and non-official international organizations that contact ISO can also participate in the work. ISO maintains close links with the International Electrotechnical Commission (IEC) in all matters of electrotechnical standardization.
Draft international standards adopted by the technical committee are circulated to members for voting, and are published as international standards only if more than 75% of the votes are in favor. International Standard ISO105-X03 was prepared by ISO/TC38/SC1 Technical Committee for Textiles, Subcommittee on Testing of Colored Textiles and Dyes.
This third edition has been slightly revised, canceling and replacing the second edition (ISO105-X03:1984). ISO105 has currently published 13 "* parts", each part is represented by a letter (such as "Part A"), and the editions are from 1978 to 1985. Each part consists of a series of "articles". Each article belongs to the corresponding part and is indicated by a two-digit series number (i.e. "Part A01"). These articles are now published as separate documents, and their original "part" letterheads remain unchanged. ISO105-A01 gives a complete list. Note that all international standards are revised from time to time, and other international standards referenced here refer to the latest version unless otherwise specified. 77
1 Scope
National Standard of the People's Republic of China
Textiles
Colour fastness
Colour fastness to chlorination
Textiles--Testsfor colourfastness--ColourfastnesstochlorinationGB/T 8441-1998
eqvIso105-x03:1987
Replaces GB8441-1987
This standard is used to determine the resistance of the colour of various types of textiles to chlorination in processing operations where they are treated with acid hypofluorite solutions to prevent shrinkage of positive wool textiles.
2 Referenced Standards
The provisions contained in the following standards constitute the provisions of this standard through reference in this standard. At the time of publication of this standard, the versions shown are valid. All standards are subject to revision, and parties using this standard should explore the possibility of using the latest versions of the following standards. GB250—1995 Grey scale for assessing color change (idtISO105-A02:1993) GB251—1995 Grey scale for assessing staining (idtISO105-A03:1993) GB/T61511997 General rules for color fastness tests for textiles (egvISO105-A01:1994) GB75541987 Specification for color fastness tests for textiles wool standard adjacent fabrics (eqvISO105-F01:1982) 3 Principle
The textile sample is attached to the adjacent fabric and treated with hydrochloric acid, sodium hypochlorite and sodium sulfite solutions in turn, then rinsed and dried. Use the grey scale to assess the color change of the sample and the staining of the adjacent fabric. A control standard sample is required. 4 Equipment and Materials
4.1 Yarn: If the sample is fabric or yarn, according to the staining assessment requirements, scour but unbleached and undyed wool yarn, undyed bleached cotton yarn and other fiber yarns are required. If the sample is loose fiber, use a comparable adjacent fabric. 4.2 Hydrochloric acid solution: Each liter contains 6mL of hydrochloric acid (density 1.16g/mL at 20℃). 4.3 Sodium hypochlorite solution: Each liter contains 1g of effective fluorine. To prepare the reagent, use sodium hypochlorite of the following specifications: Available fluorine
Sodium chloride (NaCI)
Sodium hydroxide (NaOH)
Sodium carbonate (Na,cO,)bzxZ.net
Iron (Fe)
40~160g/L
120~170g/L
20g/L (max)
20g/L (max)
0.01g/L (max)
4.4 Sodium sulfite solution: Each liter contains 3g of sodium sulfite heptahydrate (Na,SO,·7HO). 4.5 Control standard: A wool standard adjacent fabric dyed with CIAcidBlue37 (Dye Index, 3rd edition). Preparation of control standard: Place a soaked wool standard adjacent fabric into a dye bath containing 1% CIAcid Blut7 (Dye Index, 3rd edition), 10% sodium sulfate decahydrate (NaSO, ·10H,0) and 3% sulfuric acid (relative density 1.84). All percentages are based on the mass of the wool fabric. The temperature is 40°C and the bath ratio is 40:1. The dye bath is heated to boiling within 15 minutes and the boiling dyeing is continued for 45 minutes. Then take out the wool fabric, rinse it with running cold tap water and dry it. 4.6 Grey scale for assessing color change and staining (see 2). 5 Test Specimens
5.1 If the sample is a fabric, take a 40 mm x 100 mm sample and sew it between two pieces of undyed wool yarn and cotton or other yarn of approximately the same mass as the sample (4.1), and sew the three pieces together with a stitch line spacing of approximately 10 mm to form a combined sample. 5.2 If the sample is yarn, weave it into a fabric and make a combined sample according to 5.1. 5.3 If the sample is loose fiber, take an amount of it approximately equal to the mass of the wool adjacent fabric, comb it into a thin layer of 40 mm x 100 mm, sandwich it between the wool adjacent fabric and the cotton or other adjacent fabric, and sew the three pieces together with a stitch line spacing of 10 mm. 5.4 Prepare a combined sample of the control standard (4.5) according to the method for preparing fabric samples described in 5.1. 6 Operating Procedure
Place the combined sample and the combined control standard in their respective test baths and conduct parallel tests as described in 6.2 to 6.5. 6.2
Immerse the combined sample in the hydrochloric acid solution (4.2) at room temperature for 10 minutes, with a bath ratio of 25:1. 6.3
Add the same volume of sodium nitrite solution (4.3) and continue to immerse the combined sample for 10 minutes. 6.4 Rinse the combined sample thoroughly in running cold tap water, and then immerse it in the sodium sulfite solution (4.4) for 10 minutes, at a temperature of 35~40°C and a bath ratio of 50:1.
6.5 Rinse the combined sample thoroughly in running cold tap water, and then hang it in air at a temperature not exceeding 60°C to dry. 6.6 Use the grey scale to assess the discoloration of the control standard sample (4.5). If the discoloration of the control standard sample is not equal to level 3, it means that the test is not done correctly. Repeat the test with a new combined sample and a new combined control standard sample as described in 6.1 to 6.6. 6.7 Use the grey scale to assess the discoloration of the sample and the staining of the adjacent fabric 7 Test report
The test report should include the following:
a) The number of this standard, i.e. GB/T8441-1998; b) Sample specifications;
c) The discoloration level of the sample and the staining level of each undyed fiber or adjacent fabric used.
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